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<?php
/**
* Laconica, the distributed open-source microblogging tool
*
* Action for displaying the public stream
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Public
* @package Laconica
* @author Evan Prodromou <evan@controlyourself.ca>
* @copyright 2008-2009 Control Yourself, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://laconi.ca/
*/
if (!defined('LACONICA')) {
exit(1);
}
require_once INSTALLDIR.'/lib/publicgroupnav.php';
require_once INSTALLDIR.'/lib/noticelist.php';
/**
* Action for displaying the public stream
*
* @category Public
* @package Laconica
* @author Evan Prodromou <evan@controlyourself.ca>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://laconi.ca/
*
* @see PublicrssAction
* @see PublicxrdsAction
*/
class PublicAction extends Action
{
/**
* page of the stream we're on; default = 1
*/
var $page = null;
/**
* Read and validate arguments
*
* @param array $args URL parameters
*
* @return boolean success value
*/
function prepare($args)
{
parent::prepare($args);
$this->page = ($this->arg('page')) ? ($this->arg('page')+0) : 1;
return true;
}
/**
* handle request
*
* Show the public stream, using recipe method showPage()
*
* @param array $args arguments, mostly unused
*
* @return void
*/
function handle($args)
{
parent::handle($args);
header('X-XRDS-Location: '. common_local_url('publicxrds'));
$this->showPage();
}
/**
* Title of the page
*
* @return page title, including page number if over 1
*/
function title()
{
if ($this->page > 1) {
return sprintf(_('Public timeline, page %d'), $this->page);
} else {
return _('Public timeline');
}
}
/**
* Output <head> elements for RSS and Atom feeds
*
* @return void
*/
function showFeeds()
{
$this->element('link', array('rel' => 'alternate',
'href' => common_local_url('publicrss'),
'type' => 'application/rss+xml',
'title' => _('Public Stream Feed')));
}
/**
* Extra head elements
*
* We include a <meta> element linking to the publicxrds page, for OpenID
* client-side authentication.
*
* @return void
*/
function extraHead()
{
// for client side of OpenID authentication
$this->element('meta', array('http-equiv' => 'X-XRDS-Location',
'content' => common_local_url('publicxrds')));
}
/**
* Show tabset for this page
*
* Uses the PublicGroupNav widget
*
* @return void
* @see PublicGroupNav
*/
function showLocalNav()
{
$nav = new PublicGroupNav($this);
$nav->show();
}
/**
* Fill the content area
*
* Shows a list of the notices in the public stream, with some pagination
* controls.
*
* @return void
*/
function showContent()
{
$notice = Notice::publicStream(($this->page-1)*NOTICES_PER_PAGE,
NOTICES_PER_PAGE + 1);
if (!$notice) {
$this->server_error(_('Could not retrieve public stream.'));
return;
}
$nl = new NoticeList($notice, $this);
$cnt = $nl->show();
$this->pagination($this->page > 1, $cnt > NOTICES_PER_PAGE,
$this->page, 'public');
}
/**
* Makes a list of exported feeds for this page
*
* @return void
*
* @todo I18N
*/
function showExportData()
{
$fl = new FeedList($this);
$fl->show(array(0 => array('href' => common_local_url('publicrss'),
'type' => 'rss',
'version' => 'RSS 1.0',
'item' => 'publicrss'),
1 => array('href' => common_local_url('publicatom'),
'type' => 'atom',
'version' => 'Atom 1.0',
'item' => 'publicatom')));
}
}
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